Brazil's PMDB to decide on breaking with Rousseff in 30 days

By Anthony Boadle BRASILIA (Reuters) - Brazilian President Dilma Rousseff's main coalition partner served notice on Saturday that it could break from her embattled Workers' Party government in 30 days and join opposition efforts to unseat the leftist leader. At a rowdy convention of the fractious Brazilian Democratic Movement Party (PMDB), leaders quashed a motion by irate delegates who wanted to quit Rousseff's government immediately, before it goes down in a political storm over corruption and